National Survey on Drug Use and Health
Trends in Marijuana Use (1979 - 2006)

Trends in Marijuana Use Among Those 12 and Older
Number of Users	Percentage of Population

Trends in Marijuana Use Among Those 12 and Older
		Ever Used		Past Year		Past Month
Year	Pop. 12 or Older	Number	Percent	Number	Percent	Number	Percent
1979	180,343,000	50,322,000	27.9	29,869,000	16.6	23,790,000	13.2
1982	186,440,000	53,312,000	28.6	29,685,000	15.9	21,507,000	11.5
1985	192,605,000	56,547,000	29.4	26,145,000	13.6	18,641,000	9.7
1988	198,347,000	60,755,000	30.6	19,492,000	9.8	12,353,000	6.2
1991	202,859,000	61,900,000	30.5	18,067,000	8.9	10,366,000	5.1
1992	205,713,000	62,075,000	30.2	16,322,000	7.9	9,676,000	4.7
1993	207,199,000	64,149,000	31.0	17,510,000	8.5	9,610,000	4.6
1994	209,411,000	65,229,000	31.1	17,813,000	8.5	10,112,000	4.8
1995	211,532,000	65,545,000	31.0	17,755,000	8.4	9,842,000	4.7
1996	214,047,000	68,571,000	32.0	18,398,000	8.6	10,095,000	4.7
1997	216,206,000	71,112,000	32.9	19,446,000	9.0	11,109,000	5.1
1998	218,445,000	72,070,000	33.0	18,710,000	8.6	11,016,000	5.0
1999	221,123,000	76,428,000	34.6	19,102,000	8.6	10,458,000	4.7
2000	223,280,000	76,321,000	34.2	18,589,000	8.3	10,714,000	4.8
2001	225,636,000	83,272,000	36.9	21,086,000	9.3	12,122,000	5.4
2002	235,143,000	94,946,000	40.4	25,755,000	11.0	14,584,000	6.2
2003	237,682,000	96,611,000	40.6	25,231,000	10.6	14,638,000	6.2
2004	240,515,000	96,772,000	40.2	25,451,000	10.6	14,576,000	6.1
2005	243,220,000	97,545,000	40.1	25,375,000	10.4	14,626,000	6.0
2006	246,022,000	97,825,000	39.8	25,378,000	10.3	14,813,000	6.0